I don't think it will make much difference either as the S&S engine is dry sumped and most of the oil will just sit in the tank. Some new "clean" oil in contact with the engine may help but at such low mileage the oil should still be good. Not much point doing Lowebirds part fill, it's not going to flow over any of the engine as you top the oil tank up.
+1
Indeed, and as the oil pump wears over time it can let oil dribble through to collect in the crankcase when stored. (Wet sumping)
Better to remove sump plug when stored to let it drain free and impose less stress on internals when next started.